In the United States, which type of industry is often considered part of an oligopoly?

a. electric companies

b. cell phone carriers

c. mail delivery services

d. denim companies

An energy resource that can be replaced in a reasonable short period of time is call an

What is internal energy?

Long hair in the laboratory setting must be

Negative charges repel positive charges. t/f If a negatively charged rod is brought close to an electroscope that is negatively charged, the two leaves will move farther apart. T/F Electrical charges exist in the sea and in the air.

A two-stage rocket is traveling at 1200 mis with respect to the earth when the first stage runs out of fuel. Explosive bolts release the first stage and push it backward with a speed of 35 mis relative to the second stage.

Compare the friction force on the cart when it is rolling along the blacktop parking lot to the friction force on the cart when it is inside the grocery store (assume the flooring is smooth vinyl tile).

Which of the following objects has the most kinetic energy? a car going 60 miles per hour a spring that is compressed a rock sitting on the edge of a cliff a bicycle going 10 miles per hour

Which type of environment results from an equal amount of solute and solvent in and out of the cell? A. hypertonic environment B. isotonic environment C. hypotonic environment D.

If a 75 W lightbulb operates at a voltage of 120 V, what is the current in the bulb?* A. 1.6A B. 9000 A C. 195 A D. 0.63 A

A resistor and a capacitor are connected in series across an ideal battery having a constant voltage across its terminals. Long after contact is made with the battery (a) the voltage across the capacitor is A) equal to the battery's terminal voltage.